Introduction to Logic Common Forms and Functions

 Three Basic Functions are generally noted: there is
perhaps nothing more subtle than language is, and
nothing has as many different uses.
 Without a doubt, identifying just these three basic
functions is an oversimplification, but an awareness of
these functions is a good introduction to the
complexity of language .
The Functions of Language
1-Informative language function: essentially, the
communication of information.
a. The informative function affirms or denies
propositions, as in science.
b. This function is used to describe the world or reason
about it (e.g.., whether a state of affairs is true or false).
c. These sentences have a truth value; hence, they are
important for logic.
2-Expressive language function: reports feelings or
attitudes of the writer (or speaker), or of the subject, or
evokes feelings in the reader (or listener).
a. Poetry is one of the best examples, but much of,
perhaps most of, ordinary language discourse is the
expression of emotions, feelings or attitudes.
b. Two main aspects are generally noted: (1) to evoke
certain feelings and (2) to express feelings.
c. Expressive discourse, qua expressive discourse, is best
regarded as neither true or false. E.g., Shakespeare's King
Lear's lament, "Ripeness is all!" Even so, the nature of
"fictional statements" is an interesting area of inquiry.
3. Directive language function: language used for
the purpose of causing (or preventing) overt actions.
a. The directive function is most commonly found in
commands and requests.
b. Directive language is not normally considered true
or false (although a logic of commands have been
developed).
c. Example: "Close the windows."
Notice that
the intended use in a particular instance often depends more
on the specific context and tone of voice than it does on the
grammatical form or vocabulary of what is said. The simple
declarative sentence, "I'm hungry," for example, could be
used to report on a physiological condition, or to express a
feeling, or implicitly to request that someone feed me. In
fact, uses of two or more varieties may be mixed together in
a single utterance; "Stop that," for example, usually involves
both expressive and directive functions jointly. In many
cases, however, it is possible to identify a single use of
language that is probably intended to be the primary
function of a particular linguistic unit.
Notice that
Many of the most common words and phrases of any
language have both a literal or descriptive meaning
that refers to the way things are and an emotive
meaning that expresses some (positive or negative)
feeling about them.
FACTORS OF COMMUNICATION
AND FUNCTIONS OF LANGUAGE
 According to Jakobson, any act of verbal
communication is composed of six elements, or factors
(the terms of the model): (1) a context (the co-text,
that is, the other verbal signs in the same message, and
the world in which the message takes place), (2) an
addresser (a sender, or enunciator ), (3) an addressee
(a receiver, or enunciatee), (4) a contact between an
addresser and addressee, (5) a common code and (6) a
message.
 Each factor is the focal point of an oriented relation, or
function, that operates between the message and the
factor. This yields six functions:
Target factor
and
function
1
TARGET FACTOR
SOURCE FACTOR
FUNCTION
Context
Message
Referential
2
Addresser
Message
Emotive
3
Addressee
Message
Conative
4
Contact
Message
Phatic
5
Code
Message
Metalingual
6
Message
Message
Poetic
KINDS OF AGREEMENT AND
DISAGREEMENT.
prepared by:
Hessah al – motairi.
Dima
Omama